local opts = { noremap=true, silent=true }
vim.keymap.set('n', '<space>e', vim.diagnostic.open_float, opts)
vim.keymap.set('n', '[d', vim.diagnostic.goto_prev, opts)
vim.keymap.set('n', ']d', vim.diagnostic.goto_next, opts)

local on_attach = function(client, bufnr)
    -- Enable completion triggered by <c-x><c-o>
    vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')

    -- Mappings.
    -- See `:help vim.lsp.*` for documentation on any of the below functions
    local bufopts = { noremap=true, silent=true, buffer=bufnr }
    vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, bufopts)
    vim.keymap.set('n', 'gd', vim.lsp.buf.definition, bufopts)
    vim.keymap.set('n', 'gT', vim.lsp.buf.type_definition, bufopts)
    vim.keymap.set('n', 'K', vim.lsp.buf.hover, bufopts)
    vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, bufopts)
    vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, bufopts)
    vim.keymap.set('n', '<space>wa', vim.lsp.buf.add_workspace_folder, bufopts)
    vim.keymap.set('n', '<space>wr', vim.lsp.buf.remove_workspace_folder, bufopts)
    vim.keymap.set('n', '<space>wl', function()
        print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
    end, bufopts)
    vim.keymap.set('n', '<space>rn', vim.lsp.buf.rename, bufopts)
    vim.keymap.set('n', '<space>ca', vim.lsp.buf.code_action, bufopts)
    vim.keymap.set('n', 'gr', vim.lsp.buf.references, bufopts)
end

local capabilities = require('cmp_nvim_lsp').default_capabilities(vim.lsp.protocol.make_client_capabilities())

require'lspconfig'.clangd.setup{
    on_attach = on_attach,
    capabilities = capabilities,
}
require'lspconfig'.tsserver.setup{
    on_attach = on_attach,
    capabilities = capabilities,
}
require'lspconfig'.pyright.setup{
    on_attach = on_attach,
    capabilities = capabilities,
}
require'lspconfig'.rust_analyzer.setup{
    on_attach = on_attach,
    capabilities = capabilities,
    cmd = {
        "rustup", "run", "stable", "rust-analyzer",
    },
}
require'lspconfig'.phpactor.setup{
    on_attach = on_attach,
    init_options = {
        ["language_server_phpstan.enabled"] = false,
        ["language_server_psalm.enabled"] = false,
    }
}
require'lspconfig'.asm_lsp.setup{
    on_attach = on_attach,
    capabilities = capabilities,
    cmd = {
        "/home/dobiadi/.cargo/bin/asm-lsp"
    },
}
require'lspconfig'.elixirls.setup{
    on_attach = on_attach,
    capabilities = capabilities,
    cmd = {
        "elixir-ls"
    },
}

require'lspconfig'.terraformls.setup{
    on_attach = on_attach,
    capabilities = capabilities,
}
vim.opt.completeopt = {"menu", "menuone", "noselect"}

-- Set up nvim-cmp.
local cmp = require'cmp'

cmp.setup({
    preselect = cmp.PreselectMode.None,
    snippet = {
        expand = function(args)
            require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
        end,
    },
    window = {
        -- completion = cmp.config.window.bordered(),
        -- documentation = cmp.config.window.bordered(),
    },
    mapping = cmp.mapping.preset.insert({
        ['<C-b>'] = cmp.mapping.scroll_docs(-4),
        ['<C-f>'] = cmp.mapping.scroll_docs(4),
        ['<C-Space>'] = cmp.mapping.complete(),
        ['<C-e>'] = cmp.mapping.abort(),
        ['<Tab>'] = cmp.mapping.select_next_item(),
        ['<S-Tab>'] = cmp.mapping.select_prev_item(),
        ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
    }),
    sources = cmp.config.sources({
        { name = 'nvim_lsp' },
        { name = 'luasnip' }, -- For luasnip users.
        { name = 'nvim_lsp_signature_help' },
    }, {
        { name = 'buffer' },
    })
})

-- Set configuration for specific filetype.
cmp.setup.filetype('gitcommit', {
    sources = cmp.config.sources({
        { name = 'cmp_git' }, -- You can specify the `cmp_git` source if you were installed it.
    }, {
        { name = 'buffer' },
    })
})

vim.diagnostic.config({
  float = {
    source = "always",
  },
})

require("null-ls").setup({
    sources = {
        -- Terraform
        require("null-ls").builtins.formatting.terraform_fmt,
        require("null-ls").builtins.diagnostics.terraform_validate,
        -- Packer
        require("null-ls").builtins.formatting.hclfmt,
        -- JavaScript
        require("null-ls").builtins.formatting.prettier,
        require("null-ls").builtins.diagnostics.eslint_d,
        require("null-ls").builtins.code_actions.eslint_d,
        -- Python
        require("null-ls").builtins.formatting.black.with({ extra_args = {"--fast"}}),
        require("null-ls").builtins.formatting.isort,
        require("null-ls").builtins.diagnostics.flake8.with({ extra_args = {"--max-line-length", "88", "--ignore", "E203"}}),
        -- PHP
        require("null-ls").builtins.formatting.phpcbf.with({ extra_args = {"--standard=PSR12"}}),
        require("null-ls").builtins.diagnostics.phpcs.with({ extra_args = {"--standard=PSR12"}}),
        -- Rust
        require("null-ls").builtins.formatting.rustfmt,
        -- ASM
        require("null-ls").builtins.formatting.asmfmt,
        -- Elixir
        require("null-ls").builtins.formatting.mix,
    },
})